(D) The cyanide process (leaching) is primarily used for the extraction of $Gold$ $(Au)$ and $Silver$ $(Ag)$ from their ores.In the froth flotation pr

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(D) The cyanide process (leaching) is primarily used for the extraction of $Gold$ $(Au)$ and $Silver$ $(Ag)$ from their ores.In the froth flotation process for $Zinc$ sulfide $(ZnS)$,$NaCN$ or $KCN$ is used as a depressant to prevent $ZnS$ from forming froth.However,$Copper$ $(Cu)$ extraction from its ores (like $CuFeS_2$) typically involves roasting and smelting,not a cyanide-based leaching process.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Reduction to free Metal

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In the isolation of which one of the following metals from their ores,is the use of cyanide salt not commonly involved?

JEE MAIN 2022 All JEE MAIN

A
Zinc
B
Gold
C
Silver
D
Copper

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Class 12

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General Principles and Processes of Isolation of Elements

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Reduction to free Metal

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Heating a mixture of $Cu_2O$ and $Cu_2S$ will give:

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In the equation $4M + 8CN^{-} + 2H_2O + O_2 \to 4[M(CN)_2]^- + 4OH^{-}$,identify the metal $M$.

Medium

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The Ellingham diagram of a certain metal $M$ is represented in the figure. The points $A$ and $B$ respectively correspond to:

Easy

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Assertion : Zinc can be used while copper cannot be used in the recovery of $Ag$ from the complex $[Ag(CN)_2]^-$.
Reason : Zinc is a more powerful reducing agent than copper.

MediumAIIMS 2017

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Carbon can reduce ferric oxide to iron at a temperature above $983 \ K$ because

MediumKCET 2010

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In the isolation of which one of the following metals from their ores,is the use of cyanide salt not commonly involved?

Similar Questions

Heating a mixture of $Cu_2O$ and $Cu_2S$ will give:

In the equation $4M + 8CN^{-} + 2H_2O + O_2 \to 4[M(CN)_2]^- + 4OH^{-}$,identify the metal $M$.

The Ellingham diagram of a certain metal $M$ is represented in the figure. The points $A$ and $B$ respectively correspond to:

Assertion : Zinc can be used while copper cannot be used in the recovery of $Ag$ from the complex $[Ag(CN)_2]^-$.Reason : Zinc is a more powerful reducing agent than copper.

Carbon can reduce ferric oxide to iron at a temperature above $983 \ K$ because

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Assertion : Zinc can be used while copper cannot be used in the recovery of $Ag$ from the complex $[Ag(CN)_2]^-$.
Reason : Zinc is a more powerful reducing agent than copper.